![](/assets/images/picto-drapeau-france-3a76576a5d60a512053b4612ab58dae5.png)
7. Environmental influences on fatigue life
As organic matrices are sensitive to water, environmental conditions (humidity, temperature) coupled with mechanical stress can lead to irreversible degradation, which can severely affect the mechanical strength of composite parts in service. It is therefore imperative to know how the properties of the materials used evolve as they age, in order to predict their service life or strength beyond a given time. The influence of aging on material behavior is manifested by a lowering of the glass transition temperature T
g
of the matrix and a drop in mechanical characteristics (shear modulus, transverse modulus, fracture characteristics, etc.).
Exclusive to subscribers. 97% yet to be discovered!
You do not have access to this resource.
Click here to request your free trial access!
Already subscribed? Log in!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference
This article is included in
Plastics and composites
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Environmental influences on fatigue life
Bibliography
Software tools
Commercial finite element calculation codes (ABAQUS, ANSYS...) do not perform fatigue calculations, but calculate for a given number of cycles. The material characteristics then correspond to the residual properties for the number of cycles concerned. The question then remains: for which cycles is it wise to perform these calculations? The answer can be found in the cycle skipping techniques mentioned in [AM 5 410] § 8.2....
Events
ICFC5, Fifth International Conference on Fatigue of Composites 16-19, October 2010 Nanjing, China.
Directory
Organizations – Federations – Associations (non-exhaustive list)SF2M, Société Française de Métallurgie et de Matériaux. Fatigue Commission http://www.sf2m.asso.fr
Exclusive to subscribers. 97% yet to be discovered!
You do not have access to this resource.
Click here to request your free trial access!
Already subscribed? Log in!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference